package com.study.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    public String PaymentInfo_OK(Integer id){
        return "线程池："+Thread.currentThread().getName()+" payment_ok,id=="+id+"\t"+"o(*￣︶￣*)o";
    }

    @HystrixCommand(
            fallbackMethod = "PaymentInfo_TimeOutHandler",
            commandProperties = {
                @HystrixProperty(
                        name="execution.isolation.thread.timeoutInMilliseconds",
                        value="3000")
                })
    public String PaymentInfo_TimeOut(Integer id){
        int timeNum=5;
//        int a = 10/0;
        try {
            TimeUnit.SECONDS.sleep(timeNum);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:"+Thread.currentThread().getName()+",payment_TimeOut,id: "+id+"\t"+"O(∩_∩)O，耗费"+timeNum+"秒";
    }

    public String PaymentInfo_TimeOutHandler(Integer id){
        return "线程池:"+Thread.currentThread().getName()+",系统繁忙或者运行出错，请稍后再试！id: "+id+"\t"+"o(╥﹏╥)o";
    }


    //    *******熔断*******

    @HystrixCommand(
            fallbackMethod = "paymentCircuitBreaker_fallback",
            commandProperties = {
                    //是否开启断路器
                    @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),
                    //请求次数
                    @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),
                    //时间窗口期
                    @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),
                    //失败率达到多少后跳闸
                    @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60")
            }
    )
    public String paymentCircuitBreaker(@PathVariable("id")Long id){
        if(id<0){
            throw new RuntimeException("****id不能为负数！");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号=="+serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id")Long id){
        return "id不能为负数，请稍后再试。ヾ(￣▽￣)Bye~Bye~  id=="+id;
    }

}
